A critical remotely exploitable vulnerability has been discovered in the widely used Linux and Unix command-line shell program, known as BASH, aka the GNU Bourne Again Shell, leaving countless websites, servers, PCs, OS X Macs, various home routers, and many more open to exploitation by specially crafted attacks. “This issue is especially dangerous as there are many possible ways Bash can be called by an application,” a Red Hat security advisory warned.

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